A heating coil is labelled 
The coil is cut in half and the two pieces are joined in parallel to the same source. The energy now liberated per second is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
Power of heating coil 
100 W and voltage (V) 
220 volts. When the heating coil is cut into two equal parts and these parts are joined in parallel the resistance of the coil is reduced to one‐fourth of the previous value. Therefore energy liberated per second becomes 4 times. i.e. 
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems
A galvanometer having a coil resistance of 60 Ω Ω shows full scale deflection when a current of 1.0…
A student measures the terminal potential difference (V) of a cell (of emf ε and internal resistanc…
See the electrical circuit shown in this figure. Which of the following equations is a correct equa…
A thermocouple of negligible resistance produces an e.m.f. of 40 µV/°C in the linear range of tempe…
In the circuit shown in the figure, if potential at point A is taken to be zero the potential at po…
A milli voltmeter of 25 milli volt range is to be converted into an ammeter of 25 ampere range. The…